Security readout for executives and security teams
Plain-English summary
LibrettoCMS 1.1.7 has an unauthenticated file upload flaw in its File Manager plugin that can lead to remote code execution. A public module and Exploit-DB entries exist, raising practical risk, but the provided sources do not show KEV listing or confirmed active exploitation.
Executive priority
Prioritize this for rapid exposure review if LibrettoCMS is present. The business risk is server compromise without credentials, especially on public websites, but remediation specifics are incomplete in the supplied sources.
Technical view
The issue is CWE-434 in adm/ui/js/ckeditor/plugins/pgrfilemanager/php/upload.php. The handler does not adequately validate extensions, allowing misleading uploads that can later become executable PHP files. CVSS 4.0 is 9.3 critical, with network access, no authentication, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where LibrettoCMS 1.1.7 is internet-facing and the File Manager plugin path is reachable. Earlier versions are described as possible but not confirmed in the supplied affected list.
Exploitation context
Public exploit references exist in Metasploit and Exploit-DB, so defenders should treat exploit knowledge as available. The provided evidence does not support claiming current active exploitation or KEV inclusion.
Researcher notes
Use source-grounded validation only: version, reachable handler, logs, and file-system indicators. Do not assume unsupported versions are affected beyond the stated 1.1.7 and possible earlier scope unless additional vendor or code evidence confirms it.
Mitigation direction
- Inventory LibrettoCMS deployments and confirm whether version 1.1.7 is present.
- Restrict public access to LibrettoCMS administrative and File Manager paths.
- Check LibrettoCMS or advisory guidance for a supported patch or upgrade path.
- Remove unexpected executable uploads from web-accessible directories after forensic review.
- If no maintained fix exists, migrate away from exposed LibrettoCMS instances.
Validation and detection
- Confirm whether the File Manager upload handler path is reachable without authentication.
- Review web logs for requests to the vulnerable upload handler.
- Inspect web-accessible upload directories for unexpected PHP or renamed executable files.
- Verify administrative and file-management paths are blocked from untrusted networks.
- Document version evidence because earlier-version impact is not fully confirmed.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2013-10054 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.3 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/libretto_upload_exec.rbCVE reference · exploit
- https://www.exploit-db.com/exploits/26213CVE reference · exploit
- https://www.exploit-db.com/exploits/26421CVE reference · exploit
- https://sourceforge.net/projects/librettocms/CVE reference · product
- https://www.vulncheck.com/advisories/librettocms-file-manager-arbitrary-file-uploadCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.